syscons_cbus.c revision 67370 
1/*-
2 * Copyright (c) 1999 FreeBSD(98) Porting Team.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/pc98/cbus/syscons_cbus.c 67370 2000-10-20 10:35:44Z kato $
27 */
28
29#include "opt_syscons.h"
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/bus.h>
36#include <sys/cons.h>
37#include <sys/consio.h>
38
39#include <machine/clock.h>
40
41#include <pc98/pc98/pc98.h>
42#include <pc98/pc98/pc98_machdep.h>
43
44#include <dev/syscons/syscons.h>
45
46#include <i386/isa/timerreg.h>
47
48#include <isa/isavar.h>
49
50static devclass_t	sc_devclass;
51
52static sc_softc_t main_softc;
53
54static void
55scidentify (driver_t *driver, device_t parent)
56{
57	BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
58}
59
60static int
61scprobe(device_t dev)
62{
63	/* No pnp support */
64	if (isa_get_vendorid(dev))
65		return (ENXIO);
66
67	device_set_desc(dev, "System console");
68	return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
69}
70
71static int
72scattach(device_t dev)
73{
74	return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
75}
76
77static int
78scresume(device_t dev)
79{
80	return sc_resume_unit(device_get_unit(dev));
81}
82
83int
84sc_max_unit(void)
85{
86	return devclass_get_maxunit(sc_devclass);
87}
88
89sc_softc_t
90*sc_get_softc(int unit, int flags)
91{
92	sc_softc_t *sc;
93
94	if (unit < 0)
95		return NULL;
96	if (flags & SC_KERNEL_CONSOLE) {
97		/* FIXME: clear if it is wired to another unit! */
98		sc = &main_softc;
99	} else {
100	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
101		if (sc == NULL)
102			return NULL;
103	}
104	sc->unit = unit;
105	if (!(sc->flags & SC_INIT_DONE)) {
106		sc->keyboard = -1;
107		sc->adapter = -1;
108		sc->mouse_char = SC_MOUSE_CHAR;
109	}
110	return sc;
111}
112
113sc_softc_t
114*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
115{
116	sc_softc_t *sc;
117	int units;
118	int i;
119
120	sc = &main_softc;
121	if (((adp == NULL) || (adp == sc->adp))
122	    && ((kbd == NULL) || (kbd == sc->kbd)))
123		return sc;
124	units = devclass_get_maxunit(sc_devclass);
125	for (i = 0; i < units; ++i) {
126	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
127		if (sc == NULL)
128			continue;
129		if (((adp == NULL) || (adp == sc->adp))
130		    && ((kbd == NULL) || (kbd == sc->kbd)))
131			return sc;
132	}
133	return NULL;
134}
135
136int
137sc_get_cons_priority(int *unit, int *flags)
138{
139	int disabled;
140	char *at;
141	int u, f;
142
143	*unit = -1;
144	for (u = 0; u < 16; u++) {
145		if ((resource_int_value(SC_DRIVER_NAME, u, "disabled",
146					&disabled) == 0) && disabled)
147			continue;
148		if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
149			continue;
150		if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
151			f = 0;
152		if (f & SC_KERNEL_CONSOLE) {
153			/* the user designates this unit to be the console */
154			*unit = u;
155			*flags = f;
156			break;
157		}
158		if (*unit < 0) {
159			/* ...otherwise remember the first found unit */
160			*unit = u;
161			*flags = f;
162		}
163	}
164	if (*unit < 0)
165		return CN_DEAD;
166	return CN_INTERNAL;
167}
168
169void
170sc_get_bios_values(bios_values_t *values)
171{
172	values->cursor_start = 15;
173	values->cursor_end = 16;
174	values->shift_state = 0;
175	if (pc98_machine_type & M_8M)
176		values->bell_pitch = BELL_PITCH_8M;
177	else
178		values->bell_pitch = BELL_PITCH_5M;
179}
180
181int
182sc_tone(int herz)
183{
184	int pitch;
185
186	if (herz) {
187		/* enable counter 1 */
188		outb(0x35, inb(0x35) & 0xf7);
189		/* set command for counter 1, 2 byte write */
190		if (acquire_timer1(TIMER_16BIT | TIMER_SQWAVE))
191			return EBUSY;
192		/* set pitch */
193		pitch = timer_freq/herz;
194		outb(TIMER_CNTR1, pitch);
195		outb(TIMER_CNTR1, pitch >> 8);
196	} else {
197		/* disable counter 1 */
198		outb(0x35, inb(0x35) | 0x08);
199		release_timer1();
200	}
201	return 0;
202}
203
204static device_method_t sc_methods[] = {
205	DEVMETHOD(device_identify,	scidentify),
206	DEVMETHOD(device_probe,         scprobe),
207	DEVMETHOD(device_attach,        scattach),
208	DEVMETHOD(device_resume,        scresume),
209	{ 0, 0 }
210};
211
212static driver_t sc_driver = {
213	SC_DRIVER_NAME,
214	sc_methods,
215	sizeof(sc_softc_t),
216};
217
218DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
219